An energy harvester device located into an in-ear device and harvesting energy from dynamic motion of the wall of the outer ear canal receiving the in-ear device therein, with an external sheath of the in-ear device generally assuming the contour of the ear canal wall. The energy harvester device has an energy harvesting module mounting on an inner portion of the in-ear device adjacent the external sheath, and is at least partially elastically deformable under a displacement of the ear canal wall to generate energy corresponding to the displacement of the wall. An energy storage module mounts onto the in-ear device and connects to the energy harvesting module to receive energy there from and supplying the stored energy to an electronic device of the in-ear device. The in-ear device having the energy harvester device therein is also part of the present invention.一種位於耳內裝置的能源擷取裝置，供用於從容納耳內裝置之外耳道內壁的動態性移動擷取能源，上述耳內裝置具有外部護套，其大致呈耳道內壁輪廓之形狀。該能源擷取裝置具有能源擷取模組，其係嵌置於該耳內裝置鄰接該外部護套的內部部位上，且該能源擷取模組在耳道內壁位移時，係至少部份彈性地變形，以產生對應上述內壁位移的能源。能源儲存模組則係嵌置於該耳內裝置上，並連接至該能源擷取模組，以接收從能源擷取模組產生的能源，並將所儲存的能源供應至該耳內裝置的電子裝置。此外，具有該能源擷取裝置的耳內裝置亦是本發明的一部分。
